Science

Mysterious Freshwater Aquifer Detected Beneath The Atlantic Ocean

Mysterious Freshwater Aquifer Detected Beneath The Atlantic Ocean”

Under the undrinkably salty water of the ocean off the northeastern coast of the United States lies a enormous deposit of relatively fresh water, scientists have found.

"I found on the surface, it will create a lake protecting some 15,000 sq. miles", her group wrote in its report. It turned out that this just might be the world's largest freshwater source.

Due to the nature of the EM mapping technique, the results remain somewhat interpretive for now, but the team infers that the aquifer's freshwater cache likely runs all the way from DE (at the south end) up past New Jersey, New York, Connecticut, Rhode Island, and all the way to MA.

Their findings, published June 18 in the journal Scientific Reports, point to a vast reservoir of low-salinity water trapped in porous sediments under the salty ocean.

They found freshwater to be continuous, starting from the shoreline and extending out to the continental shelf. However, what the team of researchers does know that is at least spans the length of MA to New Jersey - almost 220 miles. And researchers estimate it contains at least 670 cubic miles of water.

"We knew there was fresh water down there in isolated places, but we did not know the extent or geometry", lead author Chloe Gustafson, a PhD. candidate at Columbia University's Lamont-Doherty Earth Observatory, said in a press statement.

"It could turn out to be an important resource in other parts of the world", Gustafson says. The researchers have been able to map the area holding freshwater. The dotted white line near shore shows the edge of the glacial ice sheet that melted about 15,000 years ago. In addition, a tool towed behind the ship emitted artificial electromagnetic pulses and measured the reactions from the subseafloor. Saltwater conducts electromagnetic waves better than freshwater does, so any freshwater would stand out in the data as a region of lower conductivity. In North America, it prolonged by what's now northern New Jersey, Long Island, and the New England coast. So how did all this fresh water get there?

There are two ways all this freshwater might have ended up under the ocean, the researchers explain. Sea levels had been a lot lower, exposing much of what is now the underwater US continental shelf. As the climate warmed and the ice started melting, outflowing water formed huge river deltas on top of the shelf, and fresh water got trapped there in small pockets, eventually becoming submerged under the sea bed. This preserved pockets of "fossil water" in the seabed, and until now it was the standard explanation for any freshwater aquifer found under the ocean.

However, the team has reason to believe that the aquifer is still being fed by modern runoff from dry land.

Conceptual model of offshore groundwater. This hypothesis is supported by the fact that the aquifer is generally freshest near the shore and saltier the further out you go - suggesting its water gradually mixes with that from the ocean. Typical seawater is around 35 parts per thousand salt.

Key and co-researcher, Rob Evans, a senior scientist of geology and geophysics at the Woods Hole Oceanographic Institution in MA, spent ten days at sea taking measurements, off the East Coast of the US.

This makes it, possibly, the largest aquifer known yet. This discovery could help mitigate the problems of water scarcity in arid areas that are on the brink of running out of water.

"We potentially don't must attain that on this dwelling, but when we are capable of point there are mountainous aquifers in varied regions, which could perchance simply potentially symbolize a helpful resource" in locations love southern California, Australia, the Mideast or Saharan Africa, look co-creator and geophysicist Kerry Key acknowledged in a assertion.



Like this

loading...
loading...

Latest


27 June 2019
Tourist sees changes at Dominican Republic resort where 2 guests died
Weber, who arrived on the island on Wednesday and is staying for another few days, says she'd still "highly recommend" the resort. The FBI has a team in the Dominican Republic assisting with the toxicology tests of three of the 10 known American deaths.

27 June 2019
Google Maps leads dozens of drivers into muddy open field, stranding them
Google has been testing the " Stay Safer " feature for some time, and now it has finally arrived for users in India. It will alert users when taxis, auto-rickshaws, and other public transport vehicles go off-route.

27 June 2019
Delta, JetBlue offering waivers for Dominican Republic flights after U.S. deaths
Candela Saccone and her family traveled to Punta Cana on June 12 and were scheduled to return home on the 19. A 15-year-old Argentinian girl has gone into a coma during a family vacation to the Dominican Republic.

27 June 2019
High-temperature warning issued for 6 counties
Tonight isn't looking too bad either, with "perhaps" a few showers in the southwest, but otherwise it will be mostly dry. In these areas temperatures will be in excess of 27° tomorrow afternoon, the national meteorological office warns.

27 June 2019
EBay promises 'can't-miss' deals if Amazon crashes on Prime Day (again)
In just three years, it's quickly grown to become the #3 biggest shopping event on RedFlagDeals after Black Friday and Boxing Day. Walmart , already taking on Prime with its free next-day shipping options , will also undoubtedly get in on the action.

27 June 2019
Australia defeat leaves faltering England's World Cup hopes in peril
Yet England rallied well with the ball, dragging the score back from 173 for one in the 32nd over to a more modest 285 for seven. Mitch and I have different roles throughout the team, so it's really good that we could partner together.

27 June 2019
Plane forced to land at Stansted after bomb threat
Airport authorities confirmed a precautionary landing was conducted for the Indian plane followed by a closure of the runway. Britain scrambled Typhoon fighters at supersonic speed to intercept the Boeing 777-337 and safely escorted it to Stansted.

27 June 2019
YouTube is giving users more homepage customization options
Also, under the title of recommended videos, you will see why YouTube has recommended the video to you. The elongated-pill shaped buttons will be there at the top of the homepage and on the Up Next section.

27 June 2019
Wladimir Klitschko rescued at sea after yacht fire off Spain
Since the yacht's crew had already put down the fire, the rescue boat made a decision to tow the boat to Port Adriano. Somehow the luxury yacht they were traveling on caught on fire.

27 June 2019
Ohtani in bullpen for 1st time since surgery
He always knows how he wants it to feel, and the process in which he's going to get it done. Ohtani is expected to go through the same throwing workout Saturday, White said.